DVLS Detailed Hydrocarbon Analyzer (DHA)
DHA Analyzer DVLS
Methods : ASTM D5134; ASTM D6729; ASTM D6730; ASTM D6733; ASTM D7900
- Agilent 8890 GC Foundation: Built upon the ultra-modern Agilent 8890 Gas Chromatograph featuring built-in intelligence and high-precision Electronic Pneumatic Control (EPC).
- Method Compliance: Fully conforms to standard test methods ASTM D5134, D6729, D6730, D6733, and D7900.
- PetroReporter Software: An automated, universal software platform for data processing, component identification, and comprehensive reporting.
- Superior Separation Power: Utilises 50m or 100m high-resolution capillary columns to resolve individual components in complex mixtures.
- Intelligent Identification: Employs Kovats Retention Indices (RI) for automated, operator-independent peak identification against extensive databases.
- Optimized Injection Ports: Features specialised split/splitless injection ports designed to eliminate dead volumes and sample discrimination.
- Flame Ionization Detector (FID): High-scanning rate FID ensures maximum sensitivity and a wide dynamic range for all petroleum fractions.
- Advanced Diagnostic Suite: The 8890 platform provides autonomous health checks and remote monitoring via a browser interface.
- Cryogenic Cooling Options: Fully compatible with Liquid N2 or CO2 cooling for enhanced resolution of light-end hydrocarbons.
- Application Guarantee: Each system is factory-tested and validated against reference samples before deployment, ensuring immediate laboratory productivity.
The New Standard in Detailed Hydrocarbon Analysis
The DVLS Detailed Hydrocarbon Analyzer (DHA) represents the pinnacle of gas chromatography for the energy and petrochemical sectors. This DHA analyzer is designed to meet the technical demands of laboratory chemists and refinery managers who require deep insights into the molecular makeup of light petroleum streams. Utilizing the Agilent 8890 GC, the system integrates advanced diagnostic intelligence with world-class chromatography, providing a robust platform that minimizes downtime and maximizes analytical throughput.
Unrivalled ASTM Method Versatility
Precision in individual component identification requires strict adherence to international standards. The DVLS DHA is configured to handle the full spectrum of relevant ASTM methods. Whether utilizing ASTM D5134 for naphthas, ASTM D6729 or D6730 for specialized fuel analysis, or ASTM D7900 for crude oil characterization, the system ensures your lab remains compliant and competitive. The analyzer’s ability to switch between these methodologies makes it an indispensable tool for commercial testing labs and industrial refineries.
The DVLS Pre-Fractionator is an essential accessory for front-end analysis. It functions as a specialized inlet that separates lighter organic components from heavier compounds before they enter the analytical column.
- Selective Separation: Only introduces components up to a specific boiling point (e.g., C9) to the column.
- Backflush Protection: Automatically vents heavier fractions, preventing column contamination and reducing run times.
- Thermal Uniformity: Features a specialized heating block to maintain consistent vaporization without sample discrimination.
Automated Intelligence with PetroReporter
A critical bottleneck in complex GC analysis is data interpretation. The DVLS solution eliminates this through the PetroReporter software. This platform automates the entire workflow—from peak integration to final reporting. By calculating the Kovats Retention Index (RI) for every peak and matching it against a sophisticated database, the system identifies individual hydrocarbons with a level of repeatability that manual methods cannot match. Furthermore, PetroReporter’s universal design allows it to process SimDist and FAME data, streamlining laboratory software requirements into a single, powerful interface.
Engineered for Performance and Reliability
The hardware architecture of the Agilent 8890 GC features a unique microchannel-based EPC design that protects against gas contaminants, significantly extending the life of consumables and the instrument itself. To ensure the highest chromatographic integrity, the system utilizes specialized heating blocks to eliminate “cold spots” in the sample flow path. For laboratories handling heavier crude samples, the optional DVLS Pre-Fractionator serves as a specialized inlet, protecting the primary analytical column by venting heavy components (above C9) via a precision-timed backflush.
Technical Specifications of DVLS DHA Analyzer
Specification | Details |
| Brand | DaVinci Laboratory Solutions (DVLS) / Agilent |
| Base Hardware | Agilent 8890 Gas Chromatograph |
| Test Methods | ASTM D5134, D6729, D6730, D6733, D7900 |
| Primary Detector | Flame Ionization Detector (FID) |
| Inlet System | Split/Splitless Injection Port with EPC |
| Analytical Columns | 50m or 100m High-Resolution Capillary |
| Software Platform | DVLS PetroReporter (OpenLAB/ChemStation compatible) |
| Temperature Range | Ambient +4°C to 450°C (Standard) |
| Cryogenic Cooling | Optional LN2 (-80°C) or CO2 (-40°C) |
| Pressure Control | Sixth-Generation Electronic Pneumatic Control (EPC) |
| Repeatability | < 0.5% RSD (Peak Area); < 0.008% (Retention Time) |
| Dimensions | 58 cm x 51 cm x 49 cm (W x D x H) |
PetroReporter Software for Automation & Efficiency
DVLS PetroReporter provides automated data processing, analysis, and reporting, making SimDist analysis faster and easier. This intuitive software platform offers:
- Customizable sample presets and component databases
- User-friendly editors for on-screen customization
- Compatibility with multiple chromatographic data systems
- Extensive reporting options, including distillation percent, boiling point, and volume correlation reports
- Ability to merge SimDist and Detailed Hydrocarbon Analysis (DHA) data for improved crude oil characterization (ASTM D7900)
- Custom Report Generation – Distillation cut-points, alkane profiles, and more.
Seamless CDS Integration – Compatible with OpenLAB, ChemStation, EZChrom, and others
The DVLS DHA Analyzer is the industry-preferred solution for high-resolution petroleum characterisation
Light Petroleum Streams: Precise identification of hydrocarbons in naphtha and specialized fuels to meet strict export and domestic standards.
Laboratory Quality Control: Providing repeatable, operator-independent data for commercial testing laboratories and government regulatory bodies.
Crude Oil Evaluation: Utilizing ASTM D7900 for accurate front-end analysis of stabilized crude oils, providing essential data for refinery planning.
Advanced Research: Supporting technical development in fuel technology where molecular-level detail is paramount.
Test Method | Sample Scope | Sample Range (% mass) | Determine Boiling Range |
ASTM D5134 | Olefin-free (<2 % liquid volume) liquid hydrocarbon mix-tures including virgin naphtha, reformates and alkylates | 0.01-30 | Up to 250°C |
| ASTM D6729 | Spark-ignition engine fuel blends containing oxygenates | 0.01-30 | Up to 225°C |
| ASTM D6730 | Naphtha, reformates and alkylates Spark-ignition engine fuel blends containing oxygenates | 0.01-30 | Up to 225°C |
| ASTM 6733 | Naphtha, reformates and alkylates Spark-ignition engine fuel blends containing oxygenates | 0.01-15 | Up to 225°C |
| ASTM D7900 | Naphtha, reformates and alkylates Stabilized crude oil | 0.01-30 | Up to 174°C |
